Computing-scale.



CO'MP UT ING' SC i". .LE.

Specific'ton of Lettere Patenta.

Patented Jim. 12, 1909.

Application filed. July 25. 19638. Serial Ne. 445.339.

Be it hown that l Joint (''rnrms Blun- LEY, a citizen of the United States, resiling at New (`on:ord in the County of Muslim gum and State of Ohio, have invented certain new and useful Improvements in Coin pnlingscales, of which the following is a specification.

My in vention relars to uoinpuiing Scales of thzt class` known as suspension Scales, in which the i'm-une of the weighing and indicatin nechanisin is Suspended and in which the weighing tray lopeids or in Suspended [here from.

The ohjects ot" ;ny invention are to provide :in improved construct-ion of weighing nechanisni of this class, comprising means for prodncing an accurate and reliahle a-ting of the chat eperating means regardle's of thepusition of the weight on the tiny; and to produce other imprm'en'ents in details of coatrction, which Will he more fully pointed ont hereinafter. These ohjects I accomplish in the manner illistrated in the acconpunxing drawing, in which:

F igure 1 is a, central vertical section ot' a scale frarne showing my weighing niechanism partly in section and partly in elevation therein, F i 2 is a central vertical section of the plat orm, Fig. 3 is an enlarged detail sectional view on line y-y of Fig. 1, Fig. 4 is a plan View of the onter end portion oi' one of the scale heans and its hearing-s, and, F ig. 5 is an enlarged detailview illustrating the bearings of the inner end portion oi" one of the scale beams.

Similar numer-als r fer to simila parte throughout the several views.

1 represents a suitable exterior frame or casin having a horizontal bottom portion 1' an having its 'ppc' end portion adapted to be eng-agcd hy a suitable suspension hook. Rising from the bottom plate l'i of the casing near each side thereof is a vertical standard 2 and in each of these standards is fulcrumed the outer portion of an inwardly extending scalc beam 3, said beams being provided with knife edge hearing projections 3' which bear in V-shaped agata hearings 4 supported by said standards. The outer end of each of the beams 3 isalo provided with oppositely located knife edge earing projectons which are ndcated at` 3, the upper ed es of the letter engaging the undersides of the Vsha ed ings 5 which are cerried in s Otto epenings ete bearg i'rne l in the nppcr portion oi' n hanger (i. The l wer ende of these hangers are pivotz'ly connected respectively with u horizontal har 7. which at the center of ts length in provided with a depending hook 8 which projects through an opening 1 in the bottom pinte 1 of the casing l.

The inner end of euch of the beams 3 extends through n slotted opening; in the upper mrtion of a vertical hanger 9, said beam sing; provided with a knife edge hearing projeetion 9* on its upper side, which hea's in a. V-shaped agzte hearing SP in the upper side of the slottcul opening in said hanger. Extending through the lower portions of the hanges 9 and having lower side knife edge hearing; projeetions which engage the lower end portions of the Slots in said hanges ie an eqnalizing bar ll. At the center of its length, the bar ll is fol-med with a kniie edge projection 12 on its npper side, which hears in the npper end of a sslotted opening 13 formed in the lower end of an npwardly extcnding chart Operating rack har 13, the npper and toothed portion of which engages the teeth of a pinion 14 which is carried on the nsual chart cylinder Operating shaft 15. 'l`he shaft 1:3 is suitably nounted in transverse frane elements 16 and carries one or more indicating or chart rylinders 17, the indications on which are adapted to he read through a suitable opening 19 ona cylinder casing 20.

Below the chart cylinder and on opposite sides of the har 13, I provide horizontal frane bars 21 from each of which projects ontwardly a brat-ket arm 22, the letter hein bifnrcated to receive the disk-like head 23 of a pendnhn which conprise; a rod 24 connected with said head and a weight -25`on the end of said red. The pendhnn head is provided on opposiie faces with knife blade hearing projcctions 26 which bear in the V-shaped npper sides of agate bearings 27 carried b the bracket arm *22. The peripher 1 o the pendulum hcal has connected therewith one end of a fieiible sti-ap 28, the lower end of .which is connected With the upper end of a, hanger 29 through a slotted opening in which passes the chrrespouding beam 3, the lower side of each of said hea ms having formed therewith a knife hlade projection 30 which hears in the lower portion oi' said hanger.

The lower end of the'har 13 is coniicted with the rapper end of a piston red 31, the

lower end of which connects With a pisten contai'ed in u dash pot 32 suitably monnted heluw said her 13.

As shown, the dcpendin bur hoek 8 is adaptud to have suspende therefrom the central portion of a bail 33 which carries a suitable wcighing tiny 34.

As shown hy the drawin the pendulum rods nud weights are norma ly inclined outwardly froni the bracket arms 22,*the Weights 25 being thereby held in an elevated osition. In this connection it will be observe by reference to Fig. 3 oi" the drawing, that each of the weight bodies is bifurcated so as to ermit of its swinging downwzrd without nterfe'ence with the bean 3 'which is beneath.

-Assiming thu( a body to he weghed iS placed upon the tray 34, it will he understoo'l that a downward movement will be im mrted to the horizontal bar 7, hanger-S 6 an outer cnds of the heans 3, which movement will be in proportion to the weight cnrried by the truy` The resultant Upward movement of the Inner end portions of the beams 3, will cause an equal upward movement to he imprted` to both ende of the equalizing bar 11 and a conseqnent Upward movement will be imparted to the rack her 13, which through its engagement with the pinion 14 will serve to turn the chart cylinder in the usual manner to the. desired position. By the Upward movement of the inner end poi-liens of the benns, it is obvious that the weighted pendulums will be permitted to Swing downward toward a vertical position'the extent of movement thereof being governed by the weight on the tray.

Owing to the employment and connection of the opposing beams 3 and the connection therewith of op osite ends of the equalizing bar 11 and the act'that the trey is centrally Suspended from the connecting bar gi the beams, it will be understoedthet'th operating movementpf th'e har 13 will be the same regardles of the position of the body to be weghed on the tray and regardless of the position in which the Scales" are suspended.

What I claim, is:

1. In a weighing mechanism, the combination with a Suspended frame, opposing scale beams flcrumed in said frame, and a tray carrying bar Suspended from said beamson the outer sidcs of their fulcrum points, of an equalizing bar, connections between the ends of the letter and said beams, and a chart Operating bar c'entrally connected with said equelizin bar.

2. In a. weig ing mechanisn, the combinetion with a casing, opposing beans fulcrumed therein, a tray carrying bar suspeded from the ends of said beams on the outer sides of their fulcrum points, and pivoted pendulums havin norma'll elevated weghts the heads o said pen ulums being connected with the inner portions of said beams, of en equelizing bar having its end portions connected with said beams, and

'a chart Operating bar connected centrally with said equalizing bar. In testimon whereof I aflix my signature m presence o two witnesses.

JOHN STURGUS BRADLEY.

Witnesses:

L. CARL STOUGHTON, C. C. Smrmmn. 

